The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 days. Why not try and solve them ahead of time?
Gray Code Decoder in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 78th madex 🇩🇪 0 59 2,743ms 2 days ago 82nd kg583 🇺🇸 0 60 365ms 1 Dec 2024 82nd ovs-code 🇩🇪 0 60 502ms 23 Feb 2025 82nd emgordon154 0 60 278ms 9 May 2025 82nd GolfingSuccess 🇬🇷 0 60 445ms 11 Jan 2026 82nd Steffan153 🇫🇮 0 60 446ms 19 Feb 2026 82nd sean-niemann 🇺🇸 0 60 458ms 47 hours ago 88th DialFrost 🇸🇬 0 61 25ms 24 Feb 2025 88th voytxt 🇨🇿 0 61 62ms 1 Jan 2026 88th albanian-laundromat 0 61 26ms 19 days ago 88th aksyristos 0 61 11ms 5 days ago 92nd Andrey-Plotnikov 0 62 36ms 12 Jan 2025 92nd pardouin 🇫🇷 0 62 416ms 24 Feb 2025 92nd sean-niemann 🇺🇸 0 62 167ms 19 May 2025 92nd XenThe 🇬🇧 0 62 11ms 15 Jul 2025 92nd JOrE20 0 62 28ms 24 days ago 97th Shanethegamer 🇺🇸 0 63 198ms 7 May 2025 97th sean-niemann 🇺🇸 0 63 7ms 9 May 2025 97th rucin93 🇵🇱 0 63 7ms 10 May 2025 97th edsrzf 🇳🇿 0 63 6ms 10 May 2025 97th targrik 0 63 8ms 8 Oct 2025 97th GolfingSuccess 🇬🇷 0 63 7ms 12 Jan 2026 103rd error256 0 64 4,375ms 15 Jan 2026 104th GolfingSuccess 🇬🇷 0 65 92ms 12 Jan 2026 105th Yax42 🇫🇷 0 66 470ms 6 Jan 2026 105th AdrienHache 🇫🇷 0 66 430ms 6 Jan 2026 105th GolfingSuccess 🇬🇷 0 66 10ms 12 Jan 2026 108th Shanethegamer 🇺🇸 0 67 92ms 7 May 2025 108th Shanethegamer 🇺🇸 0 67 436ms 7 May 2025 108th emgordon154 0 67 396ms 9 May 2025 108th namelessiw 0 67 407ms 2 Nov 2025 108th error256 0 67 111ms 30 Jan 2026 108th CaedenHarper 🇨🇦 0 67 770ms 2 days ago 108th fuzzylojik-golf 🇺🇸 0 67 490ms 79 mins ago 115th lifthrasiir 🇰🇷 0 68 559ms 11 Dec 2024 115th Shanethegamer 🇺🇸 0 68 257ms 13 Dec 2024 117th khvdm 0 69 142ms 13 Jan 2025 117th 4atj 0 69 1,159ms 21 May 2025 117th albanian-laundromat 0 69 533ms 6 Dec 2025 117th GolfingSuccess 🇬🇷 0 69 447ms 14 Jan 2026 117th albanian-laundromat 0 69 380ms 22 Feb 2026 117th error256 0 69 410ms 28 hours ago 123rd btnlq 0 70 193ms 4 Dec 2024 123rd error256 0 70 133ms 15 Jan 2026 123rd error256 0 70 18ms 10 days ago 126th GolfingSuccess 🇬🇷 0 71 3ms 12 Jan 2026 126th GolfingSuccess 🇬🇷 0 71 25ms 12 Jan 2026 126th GolfingSuccess 🇬🇷 0 71 18ms 14 Jan 2026 129th edsrzf 🇳🇿 0 72 546ms 9 May 2025 129th dokutan 0 72 525ms 15 Aug 2025 129th kg583 🇺🇸 0 72 18ms 2 Oct 2025 129th rucin93 🇵🇱 0 72 9ms 16 days ago 129th aksyristos 0 72 247ms 12 days ago 134th IISResetMe 0 73 429ms 10 Jan 2026 134th pardouin 🇫🇷 0 73 179ms 14 Feb 2026 134th Steffan153 🇫🇮 0 73 198ms 19 Feb 2026 137th rhdqor213 0 74 3ms 11 May 2025 137th saito-ta 🇯🇵 0 74 3ms 11 May 2025 137th kg583 🇺🇸 0 74 135ms 3 Oct 2025 137th error256 0 74 3ms 12 Jan 2026 137th lukegustafson 🇺🇸 0 74 190ms 14 days ago 137th albanian-laundromat 0 74 9ms 6 days ago 143rd kg583 🇺🇸 0 75 124ms 1 Dec 2024 143rd hallvabo 🇳🇴 0 75 131ms 30 Dec 2024 143rd ovs-code 🇩🇪 0 75 19ms 23 Feb 2025 143rd Shanethegamer 🇺🇸 0 75 71ms 7 May 2025 143rd edsrzf 🇳🇿 0 75 669ms 9 May 2025 143rd Natanaelel 🇸🇪 0 75 19ms 11 May 2025 143rd Seek64 🇩🇪 0 75 123ms 3 Jun 2025 143rd commandz0 🇺🇸 0 75 1,210ms 27 Aug 2025 143rd albanian-laundromat 0 75 108ms 5 Jan 2026 143rd albanian-laundromat 0 75 455ms 6 Jan 2026 143rd GolfingSuccess 🇬🇷 0 75 18ms 11 Jan 2026 143rd albanian-laundromat 0 75 238ms 21 days ago 143rd madex 🇩🇪 0 75 18ms 5 days ago 143rd CaedenHarper 🇨🇦 0 75 149ms 2 days ago 143rd fuzzylojik-golf 🇺🇸 0 75 123ms 111 mins ago 158th Shanethegamer 🇺🇸 0 76 129ms 13 Dec 2024 158th edsrzf 🇳🇿 0 76 114ms 10 May 2025 158th ovs-code 🇩🇪 0 76 3ms 10 May 2025 First Prev 81–160 of 274 Next Last